Notion CSS customize

preload.js

// change font setting CSS for Windows app
function injectStylesheet(){
    var styleSheet = `
        .notion-collection_view_page-block .notranslate,
        .notion-page-block .notranslate,
        .notion-header-block .notranslate,
        .notion-sub_header-block .notranslate,
        .notion-sub_sub_header-block .notranslate,
        .notion-app-inner
        {
            font-family: 'Noto Sans JP' !important;
        }
        .notion-code-block .notranslate {            
            font-family: 'Roboto Mono';
        }
    `;
    var styleNode = document.createElement("style");
    styleNode.setAttribute("type","text/css")
    var content = document.createTextNode(styleSheet)
    styleNode.append(content)
    document.getElementsByTagName("head")[0].append(styleNode)
}
document.addEventListener('DOMContentLoaded', function () {
  injectStylesheet();
});